目的：探讨肿瘤转移抑制基因KAI1/CD82和细胞分子CD44v6在人喉鳞状细胞癌( laryngeal squamous cell carcinoma, LSCC)中的表达及意义,并探讨二者之间的关系。方法采用免疫组化EnVision法检测64例LSCC和15例正常喉黏膜( nor-mal laryngeal mucosa, NLM)组织中KAI1/CD82和CD44v6的表达。结果 LSCC组织中KAI1/CD82蛋白的阳性率(37．50%)显著低于NLM组织(86．67%)(P=0．031)；LSCC组织中CD44v6蛋白的阳性率(75．00%)显著高于NLM组织(26．67%)(P=0．011)。 KAI1/CD82表达与LSCC临床分期、分化程度及淋巴结转移相关(P<0．05),与预后无关(P>0．05)；CD44v6表达与LSCC分化程度、淋巴结转移及预后相关(P<0．05),与临床分期无关(P>0．05)；二者均与患者年龄、性别无关(P>0．05)。KAI1/CD82与CD44v6在LSCC组织中的表达呈负相关(rs =-0．504,P=0．036)。结论 KAI1/CD82与CD44v6在LSCC的发生、发展和侵袭转移中起着相互抑制的作用,检测KAI1/CD82及CD44v6蛋白表达对判断LSCC的生物学行为具有重要价值。%Purpose To study the expression of metastasis suppressor gene (KAI1/CD82) and cell adhesion molecules(CD44v6) in human laryngeal squamous cell carcinoma ( LSCC) and its clinical significance, and to investigate their relationship. Methods EnVi-sion immunohistochemistry was used to detect the expression of KAI1/CD82 and CD44v6 protein in 64 cases of LSCC tissues and 15 ca-ses of normal laryngeal mucosa ( NLM) tissues. Results The positive rate of KAI1/CD82 in LSCC tissues ( 37. 50%) was signifi-cantly lower than that of the NLM tissues(86. 67%) (P=0. 031), and the positive rate of CD44v6 in LSCC tissues(75. 00%) was significantly higher than that of the NLM tissues(26. 67%) (P=0. 011). The expression of KAI1/CD82 was associated with clinical stages, grade of tumor differentiation, neck lymph node metastasis ( P<0. 05 ) while not related with age, sex and prognosis ( P>0. 05). And CD44v6 with grade of tumor differentiation, neck lymph node metastasis and prognosis (P<0. 05), but not with age, sex and clinical stages (P>0. 05). In addition, KAI1/CD82 expression was negatively correlated with CD44v6 expression (rs = -0. 504, P=0. 036). Conclusion KAI1/CD82 and CD44v6 are mutually inhibited in the tumorigenesis, progress, invasion and metastasis, and detection of the expression of KAI1/CD82 and CD44v6 may be helpful for judging the biological behaviors of LSCC.
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